Circuit controller



CIRCUIT CONTROLLER Filed March 20, 1950 INVENT R BYM' 5,- ATTOR'NEY Patented Feb. 28, 1933 lA-T-ENT ewes.

Qseeh FIELDQQF NEW YORK, hssxehoh we 1:4 pm s eve IT CONTROLLER Application filed hIarchQO, 1930. Serial. No. 437,445.

Thi nv ntionr e esin gener l tq mui tro 1er ,:-and ha mo e pa ti ular ref en e to a ircnit pntr ller adap ed Qr us with, and operated by, a. railway track switch. 3:

-. The -contr ller .of. his. inv nti s som what similer-to't d s lose in th P n to W. S. Henry, .-l, .32,2l5 granted Ma heontrollelas oi 1 the ehhra t i question, one or more movable contacts is arranged. to, he moved-between corresponding fr nt and-backxfixedeon ae s h 'anaking and breaking eireuits 01 va i us purpos h movable contaetsheing in an- .ialtennediate or neutral position during the-throw f itstre k switch, and-- makingif ront .01' :baek- .eontact, acconding: :as 1 theiritrack switch is normal or rex ersmbnwiceiversa'. I 7 :One .of :theuobjeets of the present .invem tionis to provide .;oam;opera.ting means for the movable-contacts whereby to eeeumte y and positively move the contacts, Withmeans for-adjusting the ,cam operating; means for adapting th'e-f ,cimuit controller to be; use with: ,track switehesl:-havingwarious lengths oi throw suehesiisvmetmith in ipracti e- 1 A further-.Qbjeotof the-.pnesentinvention is .to PlEQvide means :for-..iantomatiea ly moving themovableeontaets to an intermediat or'neutral position. should the. connection-be tween.theitnaekiswitehiand.circuitcontroller beeomeibroken, to therebyindicate he siaulty condition Ofl1h6 apparatus;

Fnnther objects, ipnnposes and cha act r: istic features .1 oi the .zPlBSBILt invention will appearqas; thefiescript on progresses, referencebeing made to theaccompanying drawing, showing-solely Joy may, of example, and in. Zno manner. inn limitingv sense, one form which the invention ,caneassulneJ In the dM ihgh- 1 .Fig. -1 isa planview of adeyieeembodying the.presentinvention. g

.Fig. 2 is .a,..s tiona1'; view. on th i e-2.2 of :Fig. :1, :viewed- :in ,the direeti on of ,the

ZJI'OYVS.

Fig. 3 is a sectionaLview on.-line. '3 f3 .9f igiL-YieWed" in-the. direction ofth arrows.

Big. his; a. sehematioview showing difi'erv ,B f iri t h r w n th e s ow a fl n 1, ha n a ve .2, h n edat 5 99 1 il rh shed wit e l s he p Bas .1 .t eueh the ea in is sp ndle ear? -yhl e .e enke m 6, wit .eenneq in hin 7 9 c nn c the c ank t a m vi g pe t of Week w t (n t sho vhexebyto. rook the shaft 5 when the track switch moved,

, Wi ih th a ing l i an ins lat ng. block sen-K g s ts o .mqv ble en .fih d e ts, he being sh wn, in the Pres nt ease, four s t 9 u 'c n a s m re y by my fimmp e, Ea h. et f eontaets compris s. .hfl k fixed eo tac fi, a. fron xfixedm te l9, enda movabl c n a Each mova le enfii q s a e en an. arm 2, pivoted at ,3 0 .-fi; de e nh 'ctec t th insu: let i eembe v Th pi te a ms 2 are ell cQnQeq .toiagb t9 wh ehiise eeh d e .Qpemtmg ar 16 ha g a 1:k. .7 sup'-.

Pile-ted by [th Sh t inhembytghe lid3hle thereon. We

-.-erried; y-ehe 5 are Qpem ingcamm hn here 8 and .19. Wh ehe n ib s pa etely: met d; n sh ft .5 by .nieensii hreeded h ts Q0ope hti gwith.correspondinglyi hreadeipen i h h on shaft .5, and ef md-iustwent, ca -he. hmped in p si ion on the shaft hy..h ts ,1

Qerried 5 y the op at ng-arm l-Gds; a trans: versepl e r ying opposite .rolle s22 ahdz23 iqr eo p reting, 16 P6C Y? y,:-Wi h aims 1.8 endlfiz 5 --i: Qn'r .1g m vemen o'f haftz due to movement of the driyingirflckiswitqh; the came end 1.9, .-cl mped .t sh f .5, move over,. he.ro'1le1rs.22 and.23.to xnoyeopenating 1 a m- 16 behifl Contact 11 from'its shown RQSl lOIl- (Fig, .2) that thenormel posi t on,,first.- to.nentral, where .oonta/et :.l-1 ntermediate its fixed contents, and {then to it .rev r eposition, Where contact 11- contact withthebackoontaet -9.

'.l:.h ..0pe i0n o cam 1.8..and .119,,;on=.lthe rolle ls 22 a d 2.3 is diagtammatieally illustrated in Fig. 4, the rollers being helge shown as movi g, .over -t ee n, [fbl'vth isfik'e" of isvi'n switch, shaft 5 is turned in a counter-clock wise direction to thereby move the cams 18 and 19. Roller 22 is first operated on by cam 18, the portion 18 thereof moving roller 22 'outwardly'awa'y from the spindle 5 so that the roller assumes the position shown at 25. Further movement ofthe shaft and cams; merely hold the" rollers in set position, with the'movablecontact 11 positioned midway between the fix'edcontacts 9 and 10,- that is; held in neutralpo'sition This continues during the'throw of the track switch and at the 'c'omp'letion of the switch throw, the projecting'portion 19 of cam 19 moves-roller 23 outwardly from the shaft 5 to change it from the position shown at 26 to that shown at'27 whichresults-in moving the movable contact 11 into-contact with fixed contact 9. On reverse movement of'the track switch a reverse'sequence of operation takes place.

It is thus clear that on the-first movement of the; track switch,'the contacts are opened, andare held opened until the switch completesiitsthrowat which time the contacts are closed} in the opposite direction. With track*;"svvitches "having various lengths of throw, the "shaft '5 will be rocked through varying degrees of arc so that the-contacts would be made and broken during the throwingof the; track'- switch, unless 'means' are provided'for; adjusting for different lengths of throwin'g. The meansprovided in this case is the adjustment whereby the individualicams' '18 and -19 canbe rotated on the shaft 5=to therebyvary the distance between the cam portions 18? and 19 In this mannew adjustment can 1 be made so that operation by the track switch will.always result in opening a-contact at the initiation of the throw of the switch, and closing the contact in the reversedirection at the completion of the throw of thetrack switch.

- As shown in Fig. =3, the shaft 5'extends into a casing 28 and has a squared-portion 5 to-which'is' fixed a crank arm'2 9 connected by means of'a' link 30 to a spring biased'arm 31 biased by spring 32 in a clockwise direction?" The I crank 29 assumes the position shown when the track switch is set for main line traflic, and contacts 10 and 11 are in contactfi ln this position arm 31 has been movedficounter-clockwme so as to compress spring 32'. v E Should the physicalconnection between the track switch and the operating crank 6 become broken, or should the drive connection be broken at any point, spring 32 operates to move shaft 5 so as to open contact 11 and leave it in neutral position. The crank arm 29 assumes. asymmetrical position to the other side of the connection point between link 30 and arm 31, when the track switch is set reverse, to likewise compress spring 32', sothatlbreak of the drive connection in such circumstance results in moving the movable contact 11 into neutral position. The crank 29 is in a dead center position when the movable contact 11 is in its neutral position, whereby to prevent spring 32 from moving contact 11 beyond its neutral-position.

The crank arm 6} and casing 28 and asso'- ciated parts are arranged, as shown in Fig. 1, so that they can be reversed in position to place the crank on the other side of casing 2, and'the'spring-returned casing 28 at the present crank side of casing 2. Likewise an'inlet conduit 33-iscarried by a plate 33 which can be attached to either sideof the casing so as to position-the parts either right or left handed. The above rather specificdescription of one form of the present invention' is given solely by way of illustration', and is not'in tended, in any manner whatsoever,- in alimit ing sense; Obviously,-.the invention can-as sume-many different physical forms, and is susceptible of numerous -modifications,and all such forms and modifications are-intended to be covered. by this applicationf-as come within the scopeof the-appended claims. Having described my I invention, I now Olaim:-:'-e :F' +11"; 5 -1. In a circuit controllerfor railway track switches and'the dike, a movable contactia front and F a backcontact, a; shaft for operating themovable c'ontact from one to thefo ther of thefixedcontacts, dri vemeans for said shaft, a-re'siliently biased arm, a toggleconnecting the arm to the shaft 1 for moving the movable contact to a 1 neutral positionupon the clrive-means' becoming disconnected from said shaft, the f toggle being on dead center when the contact i's-in neutral position thus to prevent the biased arm-from moving'the contact beyond neutral position. I v i 2. In a circuit controller for railway track switches and the like, a movable contact, a

front and a back contact,- ashaft for operat ing the movable contact from' one to the other of the fixed contacts, drive means-for said shaft, a pivoted arm, a toggle member connectingthe arm to the shaft, and resilient means acting on the pivoted arm to'straighten the toggle and position the'contact in neutral positio'n,whereby to automatically move the contact to neutral upon disconnection of the drive from said shaft.

3; In a circuit controller, 1 incombination, a pair of fixed contacts, a'r'novable contact therebetween, a shaft, and two cams on the shaft for moving the movable contact from one extreme position, through neutral to another extreme position, an operating portion on one cam for moving the contact from one extreme position to neutral, a second operating portion on the other cam means for moving the contact from neutral to the other extreme position, each cam including a single casting, a hole in the casting to receive the shaft, a threaded pin passing through the casting and held against endwise movement therein, a split portion running into the hole, and a clamping bolt passing through the split portion.

4. In a circuit controller, in combination, a contact, a shaft, teeth formed on the shaft, a cam on the shaft and positioned over the teeth, for moving the contact, the cam including a single casting, a circular opening therein to receive the shaft, a threaded spindle in the casting and held against endwise movement therein and engaging with said teeth, a split portion extending from one edge of the casting into said opening, and a clamping bolt in the casting passing across the split portions.

In testimony whereof I afiix my signature.

OSCAR S. FIELD. 

